Artificial tooth



May 29, 1928.

G. P. PHILLIPS ARTIFIGIAL TOOTH,

Filed Feb. 26, 1925 Inveatov:

George). y M M1 7 flags.

Patented May 29, 1928.

j UNITED STATES PAT enema r. nurture; of

ENTV OFFICE.

nosron, m ssacnusn'rrs.

ARTIFICIAL croo'rrr.

Application filed February illustration of one specific embodiment thereof, while its scope will-be more particularly pointed out in the appended claims.

In the drawings Fig. 1 represents a porcelain tooth of posterior type constructed in accordance with one form of the invention; 1

Fig. 2 shows a tubular core member utilized in forming the tooth shown in Fig. 1;

Fig. 3 is a front elevation of the tooth shown in Fig. 1; 1 I

Fi s. 4 and Sam views in perspectiveof the fastening pins or attachments for op posite sides of the tooth; K r y Fig. 6 is a side view-of thetooth showing the fastening pin in position with its soldering face placed in one position Y Fig. 7 is a similar view showing the pin placed to resent its soldering face at right angles to t e position shownin Fig. 5;

Fig. 8 is a plan view of the porcelain tooth shown in Figs. 1 and 3 illustrating its. position in a typical bridge;

Fig. 9 represents a tooth of anterior for m constructed according to one form ofmy invention;

Fig. 10 is a. side elevation of the tooth shown ,in Fig. 9; a

Fig. 11 illustrates a tubular core of mod-- ified form usedin the tooth shownin Figs.

9'and 10; v v f Fig. 12shows theformof pin employed with the core illustrated in Fig. 11; and

Fig. 13 illustrates the pin inposition for fastening the anterior tooth in place.

Referring to the drawings and to the embodiment of my invention therein shown for the purpose ofillustration, I have taken for illustrationthe crown portion of a posterior tooth 15 of typical shape utilized in bridge work, but it will be understoodthat;

theinvention is applicable to any tooth of any shape or formation. The; tooth is formed with a porcelain occlusal surface having the cusps 17 and with the porcelaincervical portion 19, the entire contour of the 26, 1925. a Serial No. 11,701.v

tooth being determined by its porcelain a body which preferably presents, except for certain areas of metallic support at its mesial and distalfaces,a substantially all-porcelain tooth.

Informing this tooth vided with a horizontal entirely through-the toot from side to side" and preferably located in the crown portion between the cervical and occlusal portions thereof.

it is preferably proassage 21 running As a convenient means for forming the passage and imparting increased strength for t e purpose torwhich employ a sheet-metal tubular core member 23 about which the tooth is baked, thecore remaining in place and constituting a "lining for the passage 21. The tubular member is it is applied, I

preferably of some high fusing metal, such as platinum, paladium or other high fusing alloy, so as to withstand the temperature ofthe baking oven. 1

The tube is preferably roughened on its outer surface so as tosecure increased bond and bearing in theporcelain and may be provided With channels 101' corrugations preferably symmetrically arranged, as shown, so that the passage throughthe tooth com rises symmetrically arranged grooves or c annels.

In mounting the tooth in a bridge pins or studs 25 are utilized which have a crosssectional shape-conforming to a cross-section of the passage so that they may be inserted from opposite ends thereof,each pin being provided with an attachment plate 27 1 presenting an external metallic area for attachment to an adjacentabutment. Such plate lies againstthe sideof the toothwhem the pin isinserted, as represented in Figso6, Tend 8, the attachment plate 27 resenting an external attachment area or ace which is raised above or projects beyond the porcelain'surface or contour of the tooth. Each plate is in the form' of an earwhich is eccentrically mounted on the end ofits pin or stud extending laterally from the end of the pin, and the latter may be inserted in the opening or bore of the tooth so that the plate may be directed lengthwise the tooth;

loss

or toward the cervical part thereof, as in Fig. 6, or at right anglesthereto as, for ex{ ample, toward the lingual side, as illustrated in Fig. 7. This provision for adjust ingthe plates to different positions, as in-- dicated in Figs. 6 and 7, provides latitude for locating the pines with reference to; the depth of the p:t between the teeth,

The abuments aving. been prepared, by any of the ordinary methods, the tooth 15' is laced in its assigned position in the bri ge by soldering one of the plates 27 to its next adjacent abutment, such; for example, as to the gold crown 29 illustrated in 8, the solder at theisanue time being. caused! to rumim betweenthe pill and the tubular lining; ofilthea toethiso asto .Vper mammtly fasten the pinv into lace. I-ithm brid e is a single tooth bri ge the plate.

: at;, oppositersidemaybesamlflanlvy fastoned to its adjacentahutment, on, if the bridge has a plnnalityofi'teeth, ihnmaly be adpne' nh;

fastened imlike. manner to "an: 7 plate. similar to thaplate- 27 presented; bythe next adjoining tooth of the bridgmconr structedrsimilarly tolthe tooth herein described. Theea as represented m Fi' of! one. embodimenni ereofi "and, it may i be embodied inbnidgesiof any desired typeasnd employin one, or; more intermediate uni-1 fifllfllum 7 may be; utilizedl through its, attaching. plate inz connection with; WHIOUSi forms ofi mountingsorsupports other. than that hemin indicated.

linqFigs, 91nd 10 I. have illustrateda tooth 31 cousinuetede on. similar principles but oiranterior- 05m andllprovided with; a;

tubular coneor-lining;33- forming an o r. ing 350i triangular? crcssfsection e11 ing,

th'mnghthe teeth from. its mcsiala to: its:

(lietnl'v face. This tooth isiplrovidedwith attachment pins 37, of whic one onlylsis shown. These: have. ca hthe; attachment plttfipi'lg, the ihfibe 'fl rgadapted to-b8 in and sol ercdl'in' e..-o eniug135- opposite faces-oft the tooth, t clatter thew by presen ing: attachment, lates attheop posite mesial- ,andldla alr aces thereof, as illustrated in- Fig. 13, whcrc'theattmhmcnt plate extends tewandrthe: 1i a1, side 05 the tootlronly; The method 0 .mountiug the tooth: in the bnidgermay Q*,'BimilflD'. that M ,m comection; with! the;- pos erior fdrmiof Since the metallic areas of attachment anezlocatedrwell away trom'thecervicalpor' tion of :thetooth andiaway from the point r of its, contact with the stationary soft tissues of! the-mouth, the: EQNQMWPODHOB oi'tlistooth only contacts t ewewith andltha latter :mays be: ground to giveany desired bearingmr contaotwiththe gum. It is well known that ipomelaim has-'- manked advantages over gold. or-o'ther metal in. that it does not accumulnte a film about its surface as does 7 a metallic contact. The occlusal surface of, the tooth-as. well as the tissue con. tacting surface being porcelain, a superior pplication of theiimventbn 8, r is merely typicab and; the type ofeteoth-dkscribedl or the purpose 0 interchangeability or repheeumt theseteetlnm be made in a vanietyi OFStfiQdllld- Sim on the: different medals, bieuepids etci, sn'thatwhen through b fut hecomaennecelsawto: ace=oneof: the artifitalteath oi' the bri ge, it, is: necessary only to sup lynaiaillirlar tooth] 0i thasmstadmdized I'm-and shape.

Whirl Lhaue hemim Major the purpose o all run: onemglfic, oiitha imntion, it lSatOs understood that;

examine dimiationa may be made-l and war;

embodimentl rieuav-ap thereof otherth'anthese;

herein 1 ustrated may-be'anailed of, all without, departing from spirit ofthe innentiom.

I claim: I

1. A: tooth lin ng; a. porcelain crown, rim op ,oiitmmea'ah and flmawthmofo mime c smdi'adapted to'be inserted and secured in each recem, f studs w geaohmmextennal metallic can. eecmtrinallmwangedewath relatien to the stud, the stud baingiiadiilstablein the recess-ta causethe. eaedxn za'ojeotr either late'rallg or longitudinally witherelation' to the length of thotooth:

2:. Am: amifioal i w tooth oompris'ng mporcelaimorown the tterhaav-ing a; trans e ly managed tubular metallioa core; pro

vided with s'm-llyamnged grooves, andxa: pin fiflzingjthe; tubular cone andh at, its end an external metallie-ean by whi hea'tbollimay be fastenedto' an adjacent 3. An artificial bridge tooth comprisingae porcelain: crown having qartransvemely arranged metallic tubular com,,and1 a pin adapt d tmbe inserted lnvtht tubular core andipresen' ,amextemak Mohamin ma" external attac ment area, e walls" Otzllfl cqmmirpinheipgf a toipermitthe pin ton-be rotate y; -fiid-imsfl'tl core in any. oneofra pluraht vof nez. I

4. Anantifi 'a .bni gmteotboompnising at porcelain crown, the lattes having a transarranged metallic u verse];

motallic'stnd ada :tmbe i tubular coreand wing at iteend a p'lam eecentmcallyl arrangedwwith relation to the stud; the walls of flieicareami theistud being; intenneleted, to pernl'qtbelatter tm berotate ably fixedgnamd coremm one ofa plural tyotposutlens and. because the late to a a 1 60i? either laterally on longitu 'nally withrelation toithe 1 .oi the 5. An artificial bridge tooth comprising a porcelain crown, the latter having atransversely arranged metallic tubular core, a metallic stud fitting the core and adapted to be inserted therein and retained by its con- 5 tactwith the walls of the core and having as an integral part thereof an external met-ab lie plate, the latter, when said stud is inserted in the core, being of an area and shape adapted to overlie the porcelain surface of the crown and to present an attachment 10 area projecting beyond the contour of said crown. t

In testimony whereof, I have signed my name to this specification.

GEORGE P. PHILLIPS. 

